Rheem GEN10AD User manual

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Call: Home Generator Helpline

(877) 369-9400 M-F 8-5 CT

10000 Watt

Residential Generator

System

Operator’s Manual

GEN10AD

2

Thank you for purchasing this quality-built Rheem / Ruud residential standby generator. We are pleased that you’ve placed

your confidence in the Rheem or Ruud brand. When operated and maintained according to the instructions in this manual,

your Rheem / Ruud generator will provide many years of dependable service.

This manual contains safety information to make you aware of the hazards and risks associated with residential standby

generators and how to avoid them. Because Rheem does not necessarily know all the applications this equipment could be

used for, it is important that you read and understand these instructions thoroughly before attempting to start or operate this

equipment. Save these instructions for future reference.

This residential standby generator requires professional installation before use. Refer to the separate

Installation manual for instructions on safe installation procedures. Your installer should follow the instructions completely.

Where to Find Us

You never have to look far to find support and service for your generator. Consult your Yellow Pages. There are many Rheem

and Ruud authorized service dealers who provide quality service. You can also contact Rheem/Ruud Customer Service by

phone at (877) 369-9400.

Generator and engine model and serial numbers should be recorded in the Installation Manual.

Rheem Sales Company

Randleman, NC 27317

(877) 369-9400

may be reproduced or transmitted in any form without the express

written permission of Rheem Sales Company.

3

Table of Contents

Important Safety Instructions. . . . . . . . . . . . . . . . . . . . . . . . 4

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

For the Home Owner:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Owner Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Fuel Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Generator Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Essential Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Delivery Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Features and Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Automatic Operation Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Setting Exercise Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Fault Detection System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Generator Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Engine Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4

Important Safety Instructions

SAVE THESE INSTRUCTIONS - This manual contains

important instructions that should be followed during

installation and maintenance of the generator and batteries.

The safety alert symbol ( ) is used with a signal word

(DANGER, CAUTION, WARNING), a pictorial and/or a

safety message to alert you to hazards. DANGER indicates

a hazard which, if not avoided, will result in death or serious

injury. WARNING indicates a hazard which, if not avoided,

could result in death or serious injury. CAUTION indicates

a hazard which, if not avoided, might result in minor or

moderate injury. NOTICE indicates a situation that could

result in equipment damage. Follow safety messages to

avoid or reduce the risk of injury or death.

The manufacturer cannot possibly anticipate every possible

circumstance that might involve a hazard. The warnings in

this manual, and the tags and decals affixed to the unit are,

therefore, not all-inclusive. If you use a procedure, work

method or operating technique that the manufacturer does

not specifically recommend, you must satisfy yourself that

it is safe for you and others. You must also make sure that

the procedure, work method or operating technique that you

choose does not render the generator system unsafe.

NOTE: Your generator is equipped with a spark arrester

muffler. The spark arrester must be maintained in effective

working order by the owner/operator. In the State of

California, a spark arrester is required by law (Section 4442

of the California Public Resources Code). Other states may

have similar laws. Federal laws apply on federal lands.

Hazard Symbols and Meanings

WARNING

Running engine gives off carbon monoxide, an

odorless, colorless, poison gas.

Breathing carbon monoxide can cause

headache, fatigue, dizziness, vomiting,

confusion, seizures, nausea, fainting or death.

Operate generator ONLY outdoors.

Install a battery operated carbon monoxide alarm near

the bedrooms.

Keep exhaust gas from entering a confined area through

windows, doors, ventilation intakes, or other openings.

•

WARNING

Storage batteries give off explosive hydrogen

gas during recharging.

Slightest spark will ignite hydrogen and

cause explosion.

Battery electrolyte fluid contains acid and is

extremely caustic.

Contact with battery contents will cause severe

chemical burns.

A battery presents a risk of electrical shock and

high short circuit current.

DO NOT dispose of battery in a fire. Recycle battery.

DO NOT allow any open flame, spark, heat, or lit cigarette

during and for several minutes after charging a battery.

DO NOT open or mutilate the battery.

Wear protective goggles, rubber apron, rubber boots and

rubber gloves.

Remove watches, rings, or other metal objects.

Use tools with insulated handles.

•

WARNING

The engine exhaust from this product contains

chemicals known to the State of California

to cause cancer, birth defects, or other

reproductive harm.

WARNING

Certain components in this product and related

accessories contain chemicals known to

the State of California to cause cancer, birth

defects, or other reproductive harm. Wash

hands after handling.

Save These Instructions

Explosion

Fire

Electrical Shock

Rotating Parts

Hot Surface

Toxic Fumes

Chemical BurnExplosive PressureAuto Start

Lift Hazard

Read Manual

5

WARNING

Generator produces hazardous voltage.

Failure to properly ground generator can result

in electrocution.

Failure to isolate generator from power utility

can result in death or injury to electric utility

workers due to backfeed of electrical energy.

When using generator for backup power, notify

utility company.

DO NOT touch bare wires or bare receptacles.

DO NOT use generator with electrical cords which are

worn, frayed, bare or otherwise damaged.

DO NOT handle generator or electrical cords while

standing in water, while barefoot, or while hands or feet

are wet.

If you must work around a unit while it is operating,

stand on an insulated dry surface to reduce

shock hazard.

DO NOT allow unqualified persons or children to operate

or service generator.

In case of an accident caused by electrical shock,

immediately shut down the source of electrical power

and contact the local authorities. Avoid direct contact

with the victim.

Despite the safe design of the residential generator,

operating this equipment imprudently, neglecting its

maintenance or being careless can cause possible injury

or death.

Remain alert at all times while working on this

equipment. Never work on the equipment when you are

physically or mentally fatigued.

Before performing any maintenance on the generator,

disconnect the battery cable indicated by a NEGATIVE,

NEG or (-) first. When finished, reconnect that

cable last.

After your generator system is installed, the generator

may crank and start without warning any time there is a

power failure. To prevent possible injury, always set the

generator’s system switch to OFF, remove the service

disconnect from the disconnect box AND remove the

15 Amp fuse BEFORE working on the equipment.

•

WARNING

Propane and Natural Gas are extremely

flammable and explosive.

Fire or explosion can cause severe burns

or death.

Install the fuel supply system according to applicable

fuel-gas codes.

Before placing the generator into service, the fuel system

lines must be properly purged and leak tested.

After the generator is installed, you should inspect the

fuel system periodically.

NO leakage is permitted.

DO NOT operate engine if smell of fuel is present or other

explosive conditions exist.

DO NOT smoke around the generator. Wipe up any oil

spills immediately. Ensure that no combustible materials

are left in the generator compartment. Keep the area near

the generator clean and free of debris.

•

WARNING

Contact with muffler area can result in

serious burns.

Exhaust heat/gases can ignite combustibles or

structures causing a fire.

DO NOT touch hot parts and AVOID hot exhaust gases.

Allow equipment to cool before touching.

DO NOT install the generator closer than 5 feet (1.5m)

from any combustibles or structures with combustible

walls having a fire resistance rating of less than 1 hour.

Keep at least minimum distances shown in General

Location Guidelines to insure for proper generator

cooling and maintenance clearances.

Code of Federal Regulation (CFR) Title 36 Parks, Forests,

and Public Property require equipment powered by an

internal combustion engine to have a spark arrester,

maintained in effective working order, complying to

USDA Forest service standard 5100-1C or later revision.

In the State of California a spark arrester is required

under section 4442 of the California Public resources

code. Other states may have similar laws.

•

WARNING

Starter and other rotating parts can entangle

hands, hair, clothing, or accessories.

NEVER operate generator without protective housing

or covers.

DO NOT wear loose clothing, jewelry or anything that

may be caught in the starter or other rotating parts.

Tie up long hair and remove jewelry.

•

CAUTION

Installing the 15A fuse could cause the engine

to start.

Observe that the 15 Amp fuse has been removed from

the control panel for shipping.

DO NOT install this fuse until all plumbing and wiring has

been completed and inspected.

•

CAUTION

Excessively high operating speeds increase risk of injury

and damage to generator.

Excessively low speeds impose a heavy load.

DO NOT tamper with governed speed. Generator supplies

correct rated frequency and voltage when running at

governed speed.

DO NOT modify generator in any way.

•

notice

Exceeding generators wattage/amperage capacity can

damage generator and/or electrical devices connected

to it.

See Essential Circuits.

Start generator and let engine stabilize before connecting

electrical loads.

•

notice

Improper treatment of generator can damage it and

shorten its life.

Use generator only for intended uses.

If you have questions about intended use, ask dealer or

contact Rheem.

Operate generator only on level surfaces.

Adequate, unobstructed flow of cooling and ventilating

air is critical to correct generator operation.

The Oil Fill, Oil Drain and the Control Panel doors must

be installed whenever the unit is running.

DO NOT expose generator to excessive moisture, dust,

dirt, or corrosive vapors.

Despite the safe design of the residential generator,

operating this equipment imprudently, neglecting its

maintenance or being careless can cause possible injury

or death.

Remain alert at all times while working on this

equipment. Never work on the equipment when you are

physically or mentally fatigued.

DO NOT start engine with air cleaner or air cleaner

cover removed.

DO NOT insert any objects through cooling slots.

DO NOT use the generator or any of its parts as a step.

Stepping on the unit can cause stress and break parts.

This may result in dangerous operating conditions from

leaking exhaust gases, fuel leakage, oil leakage, etc.

If connected devices overheat, turn them off and

disconnect them from generator.

Shut off generator if:

-electrical output is lost;

-equipment sparks, smokes, or emits flames;

-unit vibrates excessively.

•

6

7

Safety Label Locations

Installation

We sincerely appreciate your patronage. For this reason,

Rheem has made every effort to provide for a safe,

streamlined and cost-effective installation. Because each

installation is unique, it is impossible to know of and advise

the trade of all conceivable procedures and methods by

which installation might be achieved. Neither could we know

of possible hazards and/or the results of each method or

procedure. For these reasons,

Only current licensed electrical and plumbing

contractors should attempt residential generator

system installations. Installations must strictly

comply with all applicable codes, industry

standards and regulations.

Your Rheem residential generator is supplied with this

“Operator’s Manual” and a separate “Installation Manual”.

These are important documents and should be retained by

the owner after the installation has been completed.

For the Home Owner:

To help you make informed choices and communicate

effectively with your installation contractor(s),

Read and understand Owner Orientation in

this manual before contracting or starting your

residential generator installation.

To arrange for proper installation, contact the store at which

you purchased your Rheem residential generator, your

dealer, a licensed electrician or your utility power provider.

The residential generator warranty is VOID unless

the system is installed by licensed electrical and

plumbing professionals.

The Emission Control System for this generator is warranted

for standards set by the U.S. Environmental Protection

Agency and by the California Air Resources Board (CARB).

For the Installing Dealer/Contractor:

For most applications, the Installation manual contains all

the information required to properly install and start the

residential generator. This Operator’s Manual describes

essential circuit selection, routine operation and owner

maintenance procedures. If you need more information, call

(877) 369-9400, between 8:00 AM and 5:00 PM CT.

Owner Orientation

This section provides residential generator owners with the

information necessary to achieve the most satisfactory and

cost effective installation possible.

The illustrations are for typical circumstances and are meant

to familiarize you with the installation options available with

your residential generator. A thorough understanding of

these options will provide fundamental control over the cost

of your installation, as well as ensure your final satisfaction

and security.

Federal and local codes, appearance, noise levels, fuel types,

and distances are the factors that must be considered when

negotiating with an installation professional. Remember

that as the distance from the existing electrical service and

gaseous fuel supply increases, and the number of 90 degree

bends in the fuel supply increases; compensations in piping

and wiring materials must be made. This is necessary to

comply with local codes and overcome electrical voltage

drops and gaseous fuel pressure drops.

The factors mentioned above will have a direct

affect on the overall price of your residential

generator installation.

NOTE: In some areas you may need to acquire electrical

permits for installing the residential generator, building

permits for installing gas lines, and permits for noise

allowances. Your installer should check your local codes

AND obtain the permits before installing the system.

Fuel Factors

An important consideration affecting the entire installation

is the type of fuel used by your residential generator. This

generator system was factory tested and adjusted using

either LP vapor or natural gas. For proper engine function,

factors that are inherent to each of these fuels, your

location and the duration of possible utility interruptions are

important considerations in the following fuel guidelines:

• Use clean, dry fuel, free of moisture or any

particulate material. Using fuels outside the following

recommended values may cause performance

problems.

• In engines set up to run on propane (LP), commercial

grade HD5 propane with a minimum fuel energy of

2500 BTUs/ft3 with maximum propylene content of

5% and butane and heavier gas content of 2.5% and

minimum propane content of 90%.

WARNING

Propane and Natural Gas are extremely

flammable and explosive.

Fire or explosion can cause severe burns

or death.

The residential generator is equipped with an automatic

safety gas “fuel shut-off” valve.

DO NOT operate the equipment if the “fuel shut-off” valve

is missing or inoperative.

•

Power Decrease at High Altitude or High Temperature

Air density is less at high altitudes, resulting in less available

engine power. Specifically, engine power will decrease 3.5%

for each 1,000 feet (300 meters) above sea level and 1% for

each 10° F (5.6°C) above 77°F (25°C). Make sure you and

your installer consider these factors when determining total

generator load.

8

Generator Location

The actual physical location of your residential generator has

a direct affect on:

1. The amount of plumbing required to fuel

your generator.

2. The amount of wiring required to control and connect

your generator.

NOTE: Specific location guidelines are discussed in the

Installation Manual. Acquaint yourself with that information

and confer with your installer. Be sure to ask how your site

might affect installation costs and compliance with local

codes and standards.

Generator Clearances

The generator must be installed outdoors. DO NOT install

generator where exhaust gas could accumulate and enter

inside or be drawn into a potentially occupied building.

Ensure exhaust gas is kept away from any windows, doors,

ventilation intakes or other openings that can allow exhaust

gas to collect in a confined area. Prevailing winds and air

currents should be taken into consideration when positioning

generator. See the Installation Manual for full details on safe

generator location.

WARNING

Exhaust heat/gases can ignite combustibles or

structures causing a fire.

DO NOT install the generator closer than 5 feet (1.5m)

from any combustibles or structures with combustible

walls having a fire resistance rating of less than 1 hour.

Keep at least minimum distances shown in General

Location Guidelines in Installation Manual to insure for

proper generator cooling and maintenance clearances.

•

Essential Circuits

As a residential generator owner, it is important that

you clearly identify the circuits in your building that are

“essential” to you.

It is also important that your installer understand which

circuits you want to include as “Essential Circuits”.

Depending on the power consumed by these circuits, most

or all of them can be switched to the residential generator for

the duration of normal power interruption.

The wattage reference table that follows will assist you with

your decision-making process. It provides the wattage used

by many ordinary household devices. Use it as a guide when

selecting your essential circuits. Review this information with

your installer and ask about any technical considerations that

might affect your installation. This chart serves as a guide

only. For exact wattage use an appropriate wattage meter

Device

Running

Watts

Air Conditioner (12,000 Btu)* 1700

Air Conditioner (24,000 Btu)* 3800

Air Conditioner (40,000 Btu)* 6000

Battery Charger (20 Amp) 500

Circular Saw (6-1/2”) 800 to 1000

Clothes Dryer (Electric)* 5750

Clothes Dryer (Gas)* 700

Clothes Washer* 1150

Coffee Maker 1750

Compressor (1 HP)* 2000

Compressor (1/2 HP)* 1400

Compressor (3/4 HP)* 1800

Curling Iron 700

Dehumidifier* 650

Electric Blanket 400

Electric Range (per element) 1500

Electric Skillet 1250

Freezer* 700

Furnace Fan (1/2 HP)* 800

Garage Door Opener* 500 to 750

Hair Dryer 1200

Hand Drill 250 to 1100

Iron 1200

Jet Pump* 800

Light Bulb 100

Microwave Oven 700 to 1000

Milk Cooler* 1100

Oil Burner on Furnace 300

Oil Fired Space Heater (140,000 Btu) 400

Oil Fired Space Heater (85,000 Btu) 225

Radio 50 to 200

Refrigerator 700

Slow Cooker 200

Submersible Pump (1 HP)* 2000

Submersible Pump (1/2 HP)* 1500

Submersible Pump (1-1/2 HP)* 2800

Sump Pump* 800 to 1050

Table Saw (10”)* 1750 to 2000

Television 200 to 500

Toaster 1000 to 1650

*Allow three (3) times listed watts for starting device

9

Essential Circuit Selection

When selecting the essential circuits that will be switched

to “Standby Power,” it is important that the sum of the

combined circuit loads does not exceed the wattage/

amperage capacity of the generator. To help you with your

selection of essential circuits, please consider the following:

• Add up the total wattage of all electrical devices to

be connected at one time. This total should NOT be

greater than the generator’s wattage capacity.

The rated wattage of lights can be taken from light

bulbs. The rated wattage of tools, appliances and

motors can usually be found on a data plate or label

affixed to the device.

• If the appliance, tool or motor nameplate does not

list wattage, multiply volts times the ampere rating to

determine watts (Volts x Amps = Watts).

Some electric motors (induction types) require about

three times more watts of power for starting than for

running. This surge lasts for only a few seconds. Be

sure you allow for this high starting wattage when

selecting electrical devices that will be energized by the

residential generator:

• Figure the watts required to start the largest motor.

• Add that to the total running watts of all other

connected loads.

This Rheem residential generator complies with the

following “stationary standby power rating”:

The standby power rating is applicable for supplying

power for the duration of normal power interruption. No

sustained overload capability is available for this rating.

This rating is applicable to installations served by

a reliable normal utility source. This rating is only

applicable to variable loads with an average load factor

of 80% of the standby rating. The standby rating is

only applicable for optional standby power where

the generator set serves as the backup to the normal

utility source.

Use the wattage reference table provided and mark those

circuits you consider “critical” or “essential”. Make sure you

and your installer consider the system’s altitude above sea

level and the ambient temperature range when determining

total generator load.

IMPORTANT: When using the 100 Amp or 200 Amp

transfer switch with the residential generator, you must turn

off any non- essential loads. Failure to turn off non-essential

loads could overload the generator causing it to shut down.

Some examples of non-essential loads are as follows:

• Pool pump

• Hot tub

• Electric hot tub and/or pool heaters

• Central air conditioners

• Electric hot water heaters

• Electric range and/or oven

• Arc welder

• Non essential electric heaters

Delivery Inspection

Carefully inspect the residential generator for any damage

that may have occurred during shipment.

IMPORTANT: If loss or damage is noted at time of

delivery, have the person(s) making delivery note all

damage on the freight bill and affix his signature under the

consignor’s memo of loss or damage. If loss or damage is

noted after delivery, separate the damaged materials and

contact the carrier and your installer for claim procedures.

Missing or damaged parts are not warranted.

The residential generator is supplied with:

• Home generator

• Pre-attached mounting pad

• One flexible hook-up hose

• Installation and Start-up manual

• Operator’s manual

• Installation checklist

• 350 CCA AGM starting battery

• Touch up paint

• Oil drain tray

• Roof hardware bag

• One spare 15A fuse

• 2 Pole connector (for 240V from house)

• 10 Pole connector (for sensing and control wires)

• Remote LED Indicator kit (red LED/plate/screws)

To be supplied by Installer:

• Connecting wire and conduit

• Fuel supply valves/plumbing

• Various specialty tools/equipment

10

Features and Controls

Residential Generator

Read this Operator’s Manual and Important Safety Instructions before operating your generator.

Compare the illustrations with your generator to familiarize yourself with the locations of various controls and

adjustments. Save this manual for future reference.

Generator is shown with roof, plastic access cover and

control panel cover removed for clarity.

A - Air Cleaner — Uses a dry type filter element and foam

precleaner to protect engine by filtering dust and debris

out of intake air.

B - Engine Label — Identifies engine model and type.

C - Oil Fill Cap/Dipstick — Check and fill engine with

recommended oil here.

D - Control Panel — Used for various test, operation and

maintenance functions. See System Control Panel on

the next page.

E - Oil Drain Hose — Located inside access cover on

side panel. Provided to facilitate oil changing.

F - Unit Identification Label — Identifies unit by

serial number.

G - Battery — 12 Volt DC battery provides power to start

the engine.

H - Lifting Pocket — Provided at each corner for lifting

the generator.

J - Fuel Inlet — Attach appropriate fuel supply to

generator here.

K - Exhaust Port — High-performance muffler lowers

engine noise to comply with most residential codes.

L - Oil Filter — Filters engine oil to prolong generator life.

D

A

C

E

B

G

K

H

J

L

F

11

System Control Panel

Compare this Control Panel illustration with your generator to familiarize yourself with the location of these important controls:

A - Set Exercise Switch — Used to set the exercise

cycle start time. Exercise cycle only occurs in

AUTO mode.

B - Circuit Breaker — Protects the generator from shorts

and other over-current conditions. Must be ON to

supply power to the Automatic Transfer Switch.

C - 15 Amp Fuse — Protects the generator DC control

circuits. If the fuse has ‘blown’ (melted open) or was

removed, the engine cannot crank or start. Replace the

fuse using only an identical ATO 15A fuse.

D - System Switch — This two-position switch is the

most important control on the system and is used as

follows:

• “AUTO” position is the normal operating position.

If a utility power outage is sensed, the system will

start the generator. When utility power is restored,

AUTO lets the engine stabilize internal temperatures,

shuts off the generator, and waits for the next utility

power outage.

• “OFF” position turns off running generator, prevents

unit from starting and resets any detected faults.

E - Manual Over-Ride — With system switch in AUTO

position, push the manual over-ride button for six

seconds to start the generator. To turn off the generator,

push and hold the manual over-ride button until

engine stops.

F - Digital Display — Displays the total number of

hours the generator has been running and fault

codes. Used to schedule maintenance tasks and for

troubleshooting operational problems with the residential

generator. All fault conditions are described in Fault

Detection System.

B

A

C

D

E

F

12

Access Covers

The residential generator is equipped with an enclosure

that has a removable roof and an access cover for the

control panel.

To Remove Roof:

Remove the four screws and lift off.

To Remove Access Cover:

1. Remove roof as described above.

2. Remove screw at top of access cover.

3. Pull access cover outward (away) from unit while

pulling cover upward and out of base. Cover will

pull free.

To Install Access Cover and Roof:

1. Guide bottom of access cover into base.

2. Push access cover until it is flush with sides.

3. Replace cover screw.

4. Replace roof and screws.

Operation

Important Owner’s Considerations

Engine Oil

notice

Any attempt to crank or start the engine before it has

been properly serviced with the recommended oil will

result in equipment failure.

Refer to Maintenance and engine manual for oil fill

information.

Damage to equipment resulting from failure to follow this

instruction will void engine and generator warranty.

•

This engine is shipped from the factory filled with the

recommended oil. Before starting the engine, check oil level

and ensure that engine is serviced as described in the engine

operator’s manual. See Engine Oil in Maintenance.

Battery

The residential generator is supplied with a valve-regulated

rechargeable 12 Volt battery. The battery cables are

connected at the factory.

WARNING

Battery posts, terminals and related

accessories contain lead and lead compounds

- chemicals known to the State of California

to cause cancer and reproductive harm. Wash

hands after handling.

With the battery installed, all wiring to transfer switch and

home generator completed, utility power supplied to the

Automatic Transfer Switch, and the unit in AUTO mode,

the battery receives a trickle charge while the engine is not

running. The trickle charge cannot be used to recharge a

battery that is completely discharged.

15 Amp Fuse

The generator’s 15 Amp fuse was removed at the factory to

prevent the unit from starting during shipping. Your installer

will ensure the fuse is properly installed upon completion of

the installation.

Automatic Operation Sequence

The generator’s control panel houses a logic control circuit

board. This control board constantly monitors utility power

source voltage. Should that voltage drop below a preset

level, control board action will signal the engine to crank

and start.

When utility source voltage is restored above a preset

voltage level, the engine is signaled to shut down.

The actual system operation is not adjustable and is

sequenced by sensors and timers on the control board,

as follows:

Utility Voltage Dropout Sensor

• This sensor monitors utility source voltage.

• If utility source voltage drops below about 70 percent

of the nominal supply voltage, the sensor energizes

a 10 second timer. The timer is used to ‘sense’

brown-outs.

• Once the timer has expired, the engine will crank

and start.

13

Utility Voltage Pickup Sensor

This sensor monitors utility power supply voltage. When that

voltage is restored above 80 percent of the nominal source

voltage, a time delay starts timing and the engine will go to

engine cool-down.

Engine Cool-down Timer

• When the load is transferred back to the utility power

source, the engine cool-down timer starts timing.

• The timer will run for about one minute, then the

generator will stop.

• Minimum engine run time is 5 minutes.

To select automatic operation, do the following:

1. Confirm 15 Amp fuse is installed in control panel.

2. Set service disconnect or main distribution panel circuit

breaker that sends utility voltage to the transfer switch

to ON.

3. Set the generator’s main circuit breaker to its

ON position.

4. Set the system switch to AUTO.

CAUTION

With the system switch set to AUTO, the

engine may crank and start at any time

without warning.

To prevent possible injury that may be caused by such

sudden starts, always set the system switch to OFF if

performing maintenance on the system.

Remove the 15 Amp fuse before working on or around

the generator or transfer switch.

•

Checking Automatic Operation

To check the system for proper automatic operation, proceed

as follows:

1. Turn OFF the service disconnect or main distribution

panel circuit breaker sending power to the automatic

transfer switch.

The engine will crank and start when the utility voltage

drops out and the sensor has timed out. Let the system

go through its entire automatic operation sequence.

2. With the generator supplying voltage its loads, turn ON

the service disconnect or main distribution panel circuit

breaker that supplies utility power to the automatic

transfer switch.

3. The automatic transfer switch will transfer loads back

to the utility power after 5 minute minimum run time

and utility is restored.

4. The generator will run for an additional one minute for

engine cool down, then shut down.

NOTE: If utility is restored and generator does not shut

down after 10 minutes, set system switch to OFF and

contact your installer or local service center.

This completes the test procedures for automatic operation.

The residential generator will now start automatically

when utility power is lost and will supply power to the

transfer switch.

Setting Exercise Timer

The residential generator is equipped with an exercise

timer that will start and exercise the system once every

seven days. During this exercise period, the unit runs for

approximately 20 minutes and then shuts down. Electrical

load transfer DOES NOT occur during the exercise cycle

(unless an utility power outage occurs).

A button on the control panel is labeled “Set Exercise”

(see System Control Panel). The specific day and the

specific time of day this button is pressed is programmed

into the control board memory. This date and time is then

used to automatically initiate the system exercise cycle. The

“SET EXERCISE” legend on the control panel will flash until

the set exercise cycle is set.

To perform the Set Exercise procedure:

1. Choose the day and time you want your residential

generator to exercise.

2. On that day and time, press and hold down the

“Set Exercise” button for three seconds.

NOTE: “SET EXERCISE” will flash until the button is

pressed for three seconds, then “SET EXERCISE” will

illuminate for 5 seconds, and finally turn off.

3. Seven days later the unit will then start and run it’s

20 minute exercise cycle.

For example, if you press the “Set Exercise” button on

Sunday morning at 10:00 AM, the unit will run an exercise

cycle the following Sunday at 10:00 AM (+/- 1/2 hour).

NOTE: “Set Exercise” will only work if the unit is in

the AUTO mode and this exact procedure is followed.

The exerciser will need to be re-set if the 15 Amp fuse

is removed or changed, or if the 12 Volt DC battery is

disconnected.

If you want to change the day and time the unit exercises,

simply perform the “Set Exercise” procedure at the exact

weekday and time you want it to take place.

14

Maintenance

Servicing the System

To service system:

1. Remove 15 Amp fuse from control panel.

2. Set the system switch to OFF.

3. Set the generator’s main circuit breaker to its

OFF position.

4. Utility voltage is present. Disconnect power before

servicing by removing the two fuses from the

transfer switch.

Fault Detection System

The generator may have to run for long periods of time

with no operator present. For that reason, the system is

equipped with sensors that automatically shut down the

generator in the event of potentially damaging conditions,

such as low oil pressure, high temperature, over speed, and

other conditions.

The generator’s control panel has a digital display that shows

fault codes, like “FC_1”. The table below lists the detected

fault, the fault code as displayed on the control panel, and

the number of LED flashes (also described as ‘blinks’) seen

on the remote LED indicator.

Fault Description Fault Codes LED Flashes

Low battery voltage FC_1 1

Low oil pressure FC_2 2

Low voltage FC_3 3

Engine fails to start FC_4 4

Low frequency FC_5 5

Engine overspeed FC_6 6

High temperature FC_7 7

Transfer switch fault FC_8 8

The remote LED indicator is installed at a convenient inside

location. The LED will remain lit when the generator is in

AUTO. The LED will turn on and off in a series of blinks that

correspond to the fault detected in your residential generator.

The blink pattern is repeated with a brief pause between each

series of blinks.

Reset Fault Detection System

The operator must reset the fault detection system each time

it activates. To do so, place the system switch in the OFF

position for 5 seconds or more. Remedy the fault condition,

then return the residential generator to service by placing the

system switch in the AUTO position.

A description of each fault and suggested remedies are

as follows:

No LED - Discharged Battery

If there is a detected fault condition but the LED is not

blinking, this is because the battery is completely discharged.

To remedy the problem, remove the 15 Amp fuse and

disconnect the battery from the generator. Take the battery

to a local battery store for analysis. Replace ONLY with same

type battery as described in Battery in Operation. Replace

the battery after it has been fully recharged, connecting the

NEGATIVE cable last. Then install the 15 Amp fuse in the

control panel.

NOTE: With the battery installed, all wiring to transfer

switch and residential generator completed, utility power

supplied to the automatic transfer switch, and the unit in

AUTO mode, the battery receives a trickle charge while

the engine is not running. The trickle charge is not able

to recharge a battery that is completely discharged. See

Battery in Maintenance.

Low Battery Voltage (FC_1)

This fault is indicated by fault code FC_1 and one blink on

the LED indicator. This condition occurs if the generator

cannot start because the starting battery output power is

below that needed to crank the engine. Causes for this

problem may be a faulty battery or battery charge circuit.

To remedy the problem, contact your local service center

to check the battery charge output. Remove the 15 Amp

fuse and disconnect the battery from the generator. Take

the battery to a local battery store for analysis. Replace

ONLY with same type battery as described in Battery

in Operation.

Replace the battery after it has been fully recharged,

connecting the NEGATIVE cable last. Then install the 15 Amp

fuse in control panel and reset exercise timer. See Setting

Exercise Timer in Operation.

Low Oil Pressure (FC_2)

This fault is indicated by fault code FC_2 and two blinks on

the remote LED indicator. The unit is equipped with an oil

pressure switch (A).

A

15

The oil pressure switch uses normally closed contacts that

are held open by engine oil pressure during operation.

Should oil pressure drop below the 8 psi range, switch

contacts close and the engine is shut down.

To remedy the low oil pressure condition, add the

recommended oil to the FULL mark on the dipstick.

If the low oil pressure condition still exists, the engine will

start, then shut down after about 20 seconds. The fault code

will appear and the LED will flash. In this case, contact a

Rheem Authorized Dealer.

Low Voltage (Generator, FC_3)

This fault is indicated by fault code FC_3 and three blinks on

the LED indicator. This condition is caused by a restriction in

the fuel flow, a broken or disconnected signal lead, a failed

alternator winding, the control panel circuit breaker is open,

or the generator is overloaded.

To remedy the problem, contact your installer or a Rheem

Authorized Dealer.

Engine Fail To Start (FC_4)

This fault is indicated by fault code FC_4 and four blinks on

the LED indicator. This feature prevents the generator from

damaging itself if it continually attempts to start in spite

of another problem, such as no fuel supply. Each time the

system is directed to start, the unit will crank for 10 seconds,

pause for 10 seconds, and repeat. If the system does not

begin producing electricity after approximately 2 minutes,

the unit will stop cranking and the LED will blink.

Check to make sure the generator’s main circuit breaker is in

the ON position in order for the sensing leads to verify that

the unit is running.

The most likely cause of this problem is no fuel supply.

Check the inside and outside fuel shut off valves to ensure

they are fully open. Other causes could be failed spark

plug(s), failed engine ignition, or the engine air filter

is clogged. You may need to contact your installer for

assistance if you can’t remedy these problems.

Low Frequency (FC_5)

This fault is indicated by fault code FC_5 and five blinks on

the LED indicator. This feature protects devices connected

to the transfer switch by shutting the generator down

if the engine runs slower than 55 Hz for three seconds.

This condition is caused by a failed engine governor or by

excessive loads on the generator. To remedy the problem,

contact your installer or a Rheem Authorized Dealer.

Engine Overspeed (FC_6)

This fault is indicated by fault code FC_6 and six blinks on

the LED indicator. This feature protects devices connected

to the transfer switch by shutting the generator down if

the engine happens to run faster than the preset limit. The

overspeed fault is detected as follows:

• If the generator output frequency is 65-70 Hz, after

three seconds, the generator will shut down.

• If the generator output frequency is greater than 70 Hz,

the generator will shut down immediately.

This condition is caused by a failed engine governor. To

remedy the problem, contact your installer or a Rheem

Authorized Dealer.

High Temperature (FC_7)

This fault is indicated by fault code FC_7 and seven blinks

on the LED indicator. The contacts of the temperature switch

(A) are normally open. If the engine oil temperature exceeds

approximately 148.9°C (300°F), the fault is detected and the

engine shuts down.

Common causes for this condition include running the

unit with all access covers removed, obstructed air inlet or

exhaust port, low oil level, or debris in the engine cylinder

cooling fins.

To resolve the problem, let the engine cool down and remove

any accumulated debris and obstructions. Ensure that the

access covers are installed whenever the unit is running.

Transfer Switch Fault (FC_8)

This fault is indicated by fault code FC_8 and eight blinks on

the LED indicator (if transfer switch is equipped with fault

detection). The most likely cause of this fault is a blown fuse

in the transfer switch.

To remedy the problem, contact your installer or a Rheem

Authorized Dealer.

A

16

Generator Maintenance

The generator warranty does not cover items that have been

subjected to operator abuse or neglect. To receive full value

from the warranty, the operator must maintain the system as

instructed in the operator’s manual.

All adjustments should be made at least once each season.

Follow the requirements in the operator’s manual.

Generator maintenance consists of keeping the unit

clean. Operate the unit in an environment where it will

not be exposed to excessive dust, dirt, moisture or any

corrosive vapors. Cooling air louvers on the enclosure

must not become clogged with snow, leaves, or any other

foreign material. To prevent generator damage caused by

overheating, keep the enclosure cooling inlets and outlets

clean and unobstructed at all times.

Check the cleanliness of the unit frequently and clean when

dust, dirt, oil, moisture or other foreign substances are

visible on its exterior/interior surface. Inspect the air inlet

and outlet openings inside and outside the enclosure to

ensure air flow is not blocked.

NOTE: DO NOT use direct spray from a garden hose to

clean generator. Water can enter the engine and generator

and cause problems.

Engine Oil

The system is filled with synthetic oil (API SJ/CF 5W-30W).

This allows for system operation in the widest range of

temperature and climate conditions.

NOTE: The use of synthetic oil does not alter the

required oil change intervals described in the engine

operator’s manual.

Changing Engine Oil and Filter

Remove the two screws from each plastic access cover

and remove both access covers from the two sides of the

generator enclosure.

Changing Oil

1. Place oil drain tube into an approved container.

2. Remove brass plug from tube opposite of engine.

3. When oil has drained, replace brass plug into tube.

4. Slide oil drain tube up into clamp on fuel hose.

CAUTION

Avoid prolonged or repeated skin contact with used

motor oil.

Used motor oil has been shown to cause skin cancer in

certain laboratory animals.

Thoroughly wash exposed areas with soap and water.

•

KEEP OUT OF REACH OF CHILDREN. DON’T POLLUTE.

CONSERVE RESOURCES. RETURN USED OIL TO

COLLECTION CENTERS.

Changing Oil Filter

1. Place oil drain tray over tubing and slide it under oil

filter.

2. Follow instructions given in engine operator’s manual

for changing oil filter.

3. Remove oil drain tray from under oil filter and clean up

any spilled oil.

17

To fill your engine with oil:

Follow the synthetic oil grade recommendation and oil fill

instructions given in the engine operator’s manual.

notice

Any attempt to crank or start the engine before it has

been properly serviced with the recommended oil will

result in equipment failure.

Refer to Maintenance and engine manual for oil

fill information.

Damage to equipment resulting from failure to follow this

instruction will void engine and generator warranty.

•

Air Filter

The engine for this generator is equipped with a UL

recognized air filter. When servicing the air filter, follow the

instructions given in the engine operators manual. Replace

ONLY with same type UL recognized air filter, P/N 790263.

Battery

Servicing of batteries is to be performed or supervised

by personnel knowledgeable of batteries and the

required precautions. Keep unauthorized personnel away

from batteries.

WARNING

Battery posts, terminals and related

accessories contain lead and lead compounds

- chemicals known to the State of California

to cause cancer and reproductive harm. Wash

hands after handling.

Charging the Battery

If it is necessary to charge the battery, proceed as follows:

1. Set generator’s system switch to OFF.

2. Remove 15 Amp fuse from control panel.

3. Disconnect negative battery cable from negative battery

terminal (indicated by NEGATIVE, NEG, or (-).

notice

Failure to disconnect negative battery cable will result in

equipment failure.

DO NOT attempt to jump start the battery.

Damage to equipment resulting from failure to follow this

instruction will void warranty.

•

4. Charge battery with battery charger at 2 Amps until

battery holds 12 Volts.

NOTE: DO NOT exceed 13.7 volts charging.

WARNING

Storage batteries give off explosive hydrogen

gas during recharging.

Slightest spark will ignite hydrogen and

cause explosion.

Battery electrolyte fluid contains acid and is

extremely caustic.

Contact with battery contents will cause severe

chemical burns.

A battery presents a risk of electrical shock and

high short circuit current.

DO NOT dispose of battery in a fire. Recycle battery.

DO NOT allow any open flame, spark, heat, or lit cigarette

during and for several minutes after charging a battery.

DO NOT open or mutilate the battery.

Wear protective goggles, rubber apron, rubber boots and

rubber gloves.

Remove watches, rings, or other metal objects.

Use tools with insulated handles.

•

NOTE: With the battery installed and utility power available

to the transfer switch, the battery receives a trickle charge

whenever the engine is not running. It may take up to

72 hours to fully charge a battery with the trickle charge.

The trickle charge is not able to recharge a battery that is

completely discharged.

5. Connect negative battery cable to negative battery

terminal (indicated by NEGATIVE, NEG, or (-)).

6. Ensure hardware on both positive and negative battery

terminals is secure.

7. Reinstall 15 Amp fuse in control panel.

CAUTION

Installing the 15A fuse could cause the engine

to start.

DO NOT install this fuse until all plumbing and wiring has

been completed and inspected.

•

8. Set generator’s system switch to AUTO.

9. Reset exercise timer. See Setting Exercise Timer.

18

Servicing the Battery

If it is necessary to service the battery, proceed as follows:

1. Remove “Control Panel” access cover.

2. Set generator’s system switch to OFF.

3. Remove 15 Amp fuse from control panel.

4. Service or replace battery as required.

NOTE: Replace ONLY with same type battery as described in

Battery in Installation.

5. Connect red battery cable to battery positive terminal

(indicated by POSITIVE, POS, or (+)).

6. Connect negative battery cable to negative battery

terminal (indicated by NEGATIVE, NEG, or (-).

7. Ensure hardware on both positive and negative battery

terminals is secure.

8. Reinstall 15 Amp fuse in control panel.

9. Set generator’s system switch to AUTO.

10. Reset exercise timer. See Setting Exercise Timer.

11. Install “Control Panel” access cover.

To Clean the Generator

notice

Improper treatment of generator can damage it and

shorten its life.

DO NOT expose generator to excessive moisture, dust,

dirt, or corrosive vapors.

DO NOT insert any objects through cooling slots.

•

• Use a damp cloth to wipe exterior surfaces clean.

• Use a soft, bristle brush to loosen caked on dirt,

oil, etc.

• Use a vacuum cleaner to pick up loose dirt and debris.

• Use low pressure air (not to exceed 25 psi) to blow

away dirt. Inspect cooling air slots and openings on

the generator. These openings must be kept clean

and unobstructed.

When Calling For Assistance

You must have the following information at hand if it is

necessary to contact a local service center regarding service

or repair of this unit:

1. Obtain the unit Model Number and Serial Number from

the unit data decal. See Controls.

2. Obtain the engine Model/Type/Code numbers from the

engine label. See Controls. Please note that the model

number may vary slightly from that presented herein.

Storage

The Rheem / Ruud Residential Generator System is designed

for long term service as a backup generator. As such, there

is no need to take any storage precautions. However, if

it becomes necessary to take the system out of service

for an extended period, call Rheem Technical Services at

(877) 369-9400, between 8:00 AM and 5:00 PM CT for

specific recommendations. Refer to the engine operator’s

manual for further information.

19

Problem Cause Correction

Engine is running, but no AC

output is available.

1. Circuit breaker open or defective.

2. Fault in generator.

3. Poor wiring connections or

defective transfer switch.

1. Reset or replace circuit breaker.

2. Contact local service facility.

3. Check and repair.

Engine runs good at no-load but

“bogs down” when loads are

connected.

1. Short circuit in a connected load.

2. Generator is overloaded.

3. Shorted generator circuit.

4. Fuel Pressure is incorrect.

5. Natural gas fuel mixture is incorrect.

6. Kinked fuel line between regulator

and engine.

1. Disconnect shorted electrical load.

2. See Essential Circuits.

3. Contact local service facility.

4. See Gaseous Fuel System in the

Installation Manual.

5. See Gaseous Fuel System in the

Installation Manual.

6. Remove kink in fuel line. Replace if

necessary.

Engine will not start; or starts

and runs rough.

1. 15 Amp fuse missing or blown.

2. Fuel supply turned off, restricted or

depleted.

3. Failed battery.

4. Clogged air filter.

1. Install (new) 15 Amp fuse. See

System Control Panel.

2. Open fuel valve(s); check propane

tank.

3. Replace battery.

4. Clean or replace air filter.

Engine shuts down during

operation.

1. Fuel supply turned off, restricted or

depleted.

2. Fault indicator blinking.

1. Check fuel valves, fill propane tank.

2. Count blinks and refer to Fault

Detection System.

Loss of power on essential

circuits.

1. Generator circuit breaker is open.

2. Transfer switch problems.

1. Reset circuit breaker.

2. See the transfer switch manual.

Troubleshooting

20

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